Display device having a sealing film including multiple layers

Abstract

The organic electroluminescence display device of an embodiment of the present invention includes a substrate, a plurality of pixels formed on the substrate, and a sealing film that covers the plurality of pixels. The sealing film includes a first barrier layer, a base layer covering the top surface of the first barrier layer, an inter layer locally formed on the top surface of the base layer, and a second barrier layer covering the top surface of the base layer and the top surface of the inter layer. The inter layer is formed so as to cover a step on the top surface of the base layer.

What is claimed is: 
     
       1. A display device comprising:
 an insulating substrate; 
 a circuit layer disposed on the insulating substrate; 
 an anode disposed on the circuit layer; 
 a pixel isolation film formed on the anode; 
 an organic layer having light emitting element disposed on the pixel isolation film; 
 a cathode covering the organic layer; and 
 a sealing film covering the cathode, 
 wherein 
 the circuit layer includes a thin film transistor and a passivation film covering the thin film transistor, 
 the pixel isolation film is thicker than the anode, covers an edge portion of the anode, and has a contact hole exposing a part of the anode, 
 the sealing film includes a first barrier layer, a base layer on the first barrier layer, an interlayer locally formed on the base layer, and a second barrier layer on the base layer and the interlayer, 
 the base layer includes silicon oxide or amorphous silicon 
 the interlayer is organic, 
 the base layer has a flat surface and an inclined surface corresponding to the contact hole of the pixel isolation film, 
 the interlayer is disposed on a boundary portion between the flat surface and the inclined surface, and 
 the second barrier layer is in contact with the base layer at the flat surface within the contact hole. 
 
     
     
       2. The display device according to  claim 1 , wherein the first barrier layer includes silicon nitride or silicon oxynitride, and the second barrier layer includes silicon nitride or silicon oxynitride. 
     
     
       3. The display device according to  claim 1 , wherein the sealing film includes:
 a first region where the first barrier layer, the base layer, and the second barrier layer are laminated and the second barrier layer is in physical contact with the base layer, and 
 a second region where the first barrier layer, the base layer, the interlayer, and the second barrier layer are laminated. 
 
     
     
       4. The display device according to  claim 1 , wherein
 a filler is disposed on the sealing film, and 
 a second substrate is disposed on the filler.